![](https://nthumb.tpgimages.com/mid2_com_img/16166/20432/TOP19705634.jpg)
The protoplanets collided with each other and agglomerated until they reached the size of planets (several thousand kilometers in diameter). Over hundreds of millions of years, the emerging planets were intensely bombarded by other rocky bodies.
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Details
Creative#:
TOP19705634
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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No
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No
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